:root {
  --bg-top: #fff8f2;
  --bg-bottom: #fffdf9;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: #ffffff;
  --text: #171717;
  --muted: #6b7280;
  --line: rgba(23, 23, 23, 0.08);
  --primary: #f46b36;
  --primary-deep: #de5320;
  --shadow: 0 28px 80px rgba(31, 41, 55, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at left top, rgba(244, 107, 54, 0.16), transparent 26%),
    radial-gradient(circle at right top, rgba(255, 191, 105, 0.18), transparent 24%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

.landing-page {
  min-height: 100vh;
  padding: 28px 18px;
}

.landing-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.92);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.54);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-mark img {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  object-fit: contain;
}

.brand-mark strong {
  display: block;
  font-size: 22px;
  line-height: 1.2;
}

.brand-mark span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 700;
  background: rgba(244, 107, 54, 0.1);
}

.landing-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 460px);
  gap: 34px;
  align-items: center;
  margin-top: 28px;
}

.landing-copy {
  padding: 10px 4px 10px 2px;
}

.eyebrow {
  margin: 0;
  color: var(--primary-deep);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
}

h1 {
  margin: 16px 0 0;
  font-size: clamp(34px, 6vw, 62px);
  line-height: 1.02;
  font-weight: 900;
}

.landing-text {
  max-width: 520px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.feature-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid rgba(244, 107, 54, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  font-size: 14px;
  font-weight: 600;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 168px;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 16px;
  font-weight: 800;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #ff955b);
  box-shadow: 0 18px 32px rgba(244, 107, 54, 0.24);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
}

.policy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 20px;
}

.policy-links a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.policy-links a:hover {
  color: var(--primary-deep);
}

.preview-panel {
  position: relative;
  min-height: 620px;
  border-radius: 30px;
  background: linear-gradient(180deg, #1b2433, #2d3d56 52%, #101826);
  box-shadow: 0 32px 90px rgba(17, 24, 39, 0.24);
  overflow: hidden;
}

.preview-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 193, 94, 0.18), transparent 30%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0));
}

.phone-frame {
  position: absolute;
  left: 50%;
  top: 52%;
  width: min(300px, calc(100% - 72px));
  padding: 12px;
  border-radius: 36px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.12);
  transform: translate(-50%, -50%);
}

.phone-screen {
  display: block;
  width: 100%;
  border-radius: 26px;
}

.preview-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 220px;
  padding: 14px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
}

.preview-card img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.preview-card strong {
  display: block;
  font-size: 15px;
}

.preview-card span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.preview-card-top {
  left: 18px;
  top: 24px;
}

.preview-card-bottom {
  right: 18px;
  bottom: 24px;
}

@media (max-width: 960px) {
  .landing-grid {
    grid-template-columns: 1fr;
  }

  .preview-panel {
    min-height: 540px;
  }
}

@media (max-width: 640px) {
  .landing-page {
    padding: 14px;
  }

  .landing-shell {
    padding: 18px 16px 20px;
    border-radius: 26px;
  }

  .brand-row {
    align-items: flex-start;
    flex-direction: column;
  }

  h1 {
    font-size: clamp(34px, 12vw, 48px);
  }

  .landing-text {
    font-size: 15px;
  }

  .button {
    width: 100%;
  }

  .preview-panel {
    min-height: 500px;
  }

  .phone-frame {
    width: min(260px, calc(100% - 48px));
  }

  .preview-card {
    width: 190px;
    padding: 12px;
  }

  .preview-card-top {
    left: 12px;
    top: 16px;
  }

  .preview-card-bottom {
    right: 12px;
    bottom: 16px;
  }
}